The Persisting Problem of Precedent Autonomy Among Persons in a Minimally Conscious State: The Limitations of Philosophical Analysis and Clinical Assessment

Abstract

Determining whether it is ethical to withdraw life-sustaining treatments (WOLST) from a patient in the minimally conscious state (MCS) recalls recurring debates in bioethics, including the applicability of precedent autonomy and the usefulness of quality-of-life assessments. This article reviews the new clinical understanding of MCS and the complexities involved in detecting covert awareness in patients. Given the diagnostic and prognostic uncertainty surrounding most MCS determinations, we review the ongoing debates concerning precedent autonomy as they apply to making WOLST determinations for patients in MCS. We also consider the moral obligations clinicians might have to understand an MCS patient’s advance directives, current preferences, and quality of life. We argue that an optimal approach for making WOLST determinations requires weighing patients’ previous wishes against their current circumstances but that even here, factual as well as ethical vagaries and disagreements will be relatively commonplace.